Search a number
-
+
13136526661 is a prime number
BaseRepresentation
bin11000011101111111…
…10111110101000101
31020220111200200211111
430032333313311011
5203400422323121
610011305205021
7643351430356
oct141677676505
936814620744
1013136526661
115631254a05
122667490771
1313147640cb
148c8947d2d
1551d41e2e1
hex30eff7d45

13136526661 has 2 divisors, whose sum is σ = 13136526662. Its totient is φ = 13136526660.

The previous prime is 13136526577. The next prime is 13136526677. The reversal of 13136526661 is 16662563131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9133433761 + 4003092900 = 95569^2 + 63270^2 .

It is an emirp because it is prime and its reverse (16662563131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13136526661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13136526761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6568263330 + 6568263331.

It is an arithmetic number, because the mean of its divisors is an integer number (6568263331).

Almost surely, 213136526661 is an apocalyptic number.

It is an amenable number.

13136526661 is a deficient number, since it is larger than the sum of its proper divisors (1).

13136526661 is an equidigital number, since it uses as much as digits as its factorization.

13136526661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The spelling of 13136526661 in words is "thirteen billion, one hundred thirty-six million, five hundred twenty-six thousand, six hundred sixty-one".